Improvement in surgical saws



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SURGICAL SAW'.

VN- PETERS. PNOfO-UTNOGRAPKER. WASHINGTON. D C.

UNITED STATES PATENT GFFICE.

FREDERICK A. STOHLMANN, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN SURGICAL SAWS.

Specification forming part of Letters Patent No. 184,804, dated November28, 1876; application tiled October 5, 1876.

purposes, and consists of a series of beads or cylindrical or spheroidalcutters, threaded upon a steel wire or strong flexible thread or wire,and provided with handles, whereby to operate such saw by drawing itback and forth through a hole bored in the bone, at which to commence tosaw, or in any other convenient manner, the surfaces of such beadshaving peripheral cutting-edges to operate in any direction in whichlthe pressure of the cord or wire may a'ct in drawing the saw first oneway and then the other. This saw may be used as a le in removing thesurface of bone or other articles.

ln the drawing, Figure 1 is an elevation of the two ends of the saw, andFig. 2 is a sec tion of one bead in larger size.

The wire, cord, or gut a is connected at one or both ends to the handlesb c. At one or both ends it passes through the handle, and is secured bythe clamping-screw d, or otherwise. The saw-beads i are threaded uponthis wire a, and each bead is made with peripheral cutting edges, asseen in Fig. 2, so that the saw can be operated in any direction bydrawing lthe saine back and forth through erover the bone or othersubstance to be sawed or led.

If a hole is bored through a bone, the saw can be threaded through thesaine, after-taking one of the handles o'. The sawing will commence inthe hole.

I claim as my invention- The saw or abradiug instrument, made of a rangeof beads upon a wire or flexible core, with handles at the ends, eachbead having peripheral cutting-edges, substantially as set forth.

Signed by me this 29th day of September, A. D. 1876'.

FREDK. A. STOHLMANN.

Witnesses:

GEO. D. WALKER, HAROLD SERRELL.

